文本内容:
现在完成时定义
1.表示过去不确定的时间发生的动作,对现在有影响
2.表示过去发生并持续到现在的动作 规则动词规则动词的过去分词的构成规则与规则动词的过去式的构成规则相同四点变化规则 1)、一般动词,在词尾直接加“ed” work---worked---workedvisit---visited---visited 2)、以“e”结尾的动词,只在词尾加“d” live---lived---lived 3)、以“辅音字母+y”结尾的动词,将y变为i,再加“ed” study---stu___d---stu___dcry---cried---cried 4)、重读闭音节结尾,末尾只有一个辅音字母,先双写该辅音字母,再加“ed”stop---stopped---stoppeddrop---dropped--dropped不规则动词ABC型原型过去式过去分词 原型过去式过去分词beginbeganbegun giveg__egivenbearborebornborne gowentgoneblowblewblown knowknewknownbreakbrokebroken growgrewgrownchoosechosechosen lielaylaindrawdrewdrawn rideroderiddendrivedrovedriven riseroserisendo/doesdiddone ringrangrungflyflewflown shakeshookshakenforgiveforg__eforgiven singsangsungforgetforgotforgottenforgot bewas/werebeenfreezefrozefrozen sinksanksunkwritewrotewritten swimswamswumtaketooktaken throwthrewthrownwearworeworn drinkdrankdrunkseesawseen AB型原型过去式过去分词 原型过去式过去分词cancould willwould __ymight bewas/were shallshould AAA型 原型过去式过去分词 原型过去式过去分词burstburstburst putputputcastcastcast setsetsetcutcutcut shutshutshuthithithit spreadspreadspreadhurthurthurt letletletcostcostcost readreadreadAAB型 ABA型 原型过去式过去分词原型过去式过去分词beatbeatbeatenbeatbecomebecamebecome runranrun comecamecome特殊情况 readreadread read原形发音为/ri:d/,过去式和过去分词发音为/red/ ABB型 原型过去式过去分词 原型过去式过去分词bringbroughtbroughtsellsoldsoldbuyboughtboughtshootshotshotbuildbuiltbuiltsaysaidsaidburnburntburntsitsatsatcatchcaughtcaughtstandstoodstooddigdugdugshineshoneshonefeelfeltfeltsweepsweptsweptfightfoughtfoughtsleepsleptsleptfindfoundfoundteachtaughttaughtfeedfedfed____toldtoldgetgotgotthinkthoughtthoughthanghunghangedhunghangedwinwonwonhearheardheardwindwoundwoundholdheldheld__ke__de__dekeepkeptkeptmeanmeantmeantlaylaidlaidmeetmetmetleadledledpaypaidpaidloselostlostlendlentlentle__eleftleft 。